KR20180040684A - Clutch device for hybrid drive system - Google Patents

Abstract

The present invention relates to a clutch device including a first input side and a second input side, and a first output side and a second output side, wherein the input side and output side can rotate around a common rotational axis. The clutch device also includes a first clutch between the first input side and the first output side, and a second clutch between the first input side and the second output side. Further, a third clutch is provided between the first input side and the second input side. The first hydraulic actuating device is assigned to the first clutch, the second hydraulic actuating device is assigned to the second clutch, and the third hydraulic actuating device is assigned to the third clutch. The radial flange, which absorbs the axial operating force of one of the actuating devices, comprises a supply for the hydraulic fluid which extends radially and which leads to one of the actuating devices.

Description

Clutch device for hybrid drive system

The present invention relates to a clutch device. In particular, the present invention relates to a clutch device for a hybrid drive system.

The automobile includes a first drive engine implemented as an electric machine and a second drive engine implemented as a combustion engine. The driving of the automobile may be performed in a hybrid manner, that is, the first driving engine and / or the second driving engine may be arbitrarily combined. To this end, a clutch device is provided between the drive engines of the vehicle and the transmission.

DE 10 2009 059 944 A1 relates to a clutch device for a hybrid drive vehicle.

Another object of the present invention is to provide another modification for the configuration of a clutch device that can be used in a hybrid drive system. In particular it is an object of the present invention to provide a preferred guidance of a hydraulic supply line leading to an actuating device for the actuation of one of the clutches.

The above object is solved by the subject matter of the independent claims in accordance with the invention. Preferred embodiments are set forth in the dependent claims.

The clutch device also includes a first input side and a second input side, and a first output side and a second output side, wherein the input side and output side can rotate about a common rotational axis. The clutch device also includes a first clutch between the first input side and the first output side, and a second clutch between the first input side and the second output side. Further, a third clutch is provided between the first input side and the second input side. The first hydraulic actuating device is assigned to the first clutch, the second hydraulic actuating device is assigned to the second clutch, and the third hydraulic actuating device is assigned to the third clutch. A radial flange that absorbs the axial operating force of one of the actuating devices includes a supply for the hydraulic fluid that extends radially and leads to one of the actuating devices.

The first clutch and the second clutch may be disposed offset in the radial direction. However, it is preferable to arrange the first clutch and the second clutch in an offset manner in the axial direction.

The flanges may include radially extending separate and separate actuating devices, particularly for the hydraulic fluid leading to the first and second actuating devices.

The supply portion may extend radially outwardly or radially inwardly from the actuating device.

One of the output sides may include a shaft with a coaxial bore, in which case the feed preferably leads into the bore.

The feed section can be closed by a closed body on a radially outer surface, the closed body is radially adjacent to the electric machine, and the electric machine is mounted radially outside of the first input side. In this case, additional fastening of the closed body may no longer be required. Whereby assembly or disassembly of the clutch device can be simplified.

Preferably, a total of three clutches are disposed in a common housing partially filled with liquid medium. The liquid medium may in particular comprise oil. If one of the actuating devices is hydraulic, the actuating medium of the actuating device may comprise the same fluid as the medium.

The first input side is preferably configured to be connected to the rotor of the electric machine. The rotor is preferably surrounded by a stator of the electric machine radially outwards. The second input side is preferably configured to be connected to the output shaft of the internal combustion engine.

The invention will now be described more precisely with reference to the accompanying drawings.

1 is a view showing a first embodiment of a clutch device.
Figs. 2 to 5 are views each showing still another embodiment of the clutch device of Fig. 1. Fig.

1, an exemplary clutch device 100 is shown. A first input side 110, a second input side 115, a first output side 120, and a second output side 125 are disposed around the rotating shaft 105.

The first clutch 130 is disposed between the first input side 110 and the first output side 120 and the second clutch 135 is disposed between the first input side 110 and the second output side 125, An optional third clutch (140) is disposed between the first input side (110) and the second input side (115). The first and second clutches 130 and 135 are offset relative to each other in the radial direction, or preferably axially, to form an axial dual clutch. The third clutch 140 is preferably axially offset relative to at least one of the other two clutches 130 and 135. [

The first input side 110 is generally configured to be coupled to an electrical machine 145 that includes a rotor 150 and a stator 155. Preferably, the electrical machine 145 is of the inner rotor type and the rotor 150 is located radially inside the stator 155. In this case, more preferably, the stator 155 includes one or more solenoids, and the rotor 150 includes one or more permanent magnets. The rotor 150 is preferably radially outward of the clutches 130, 135 and 140 and is connected to the first input side 110 by riveting in the illustrated embodiment. The second input side 115 is preferably configured to be connected to an internal combustion engine, particularly a combustion engine, more preferably a reciprocating engine.

The output sides 120 and 125 are configured to couple with input shafts of a dual transmission (not shown). The dual transmission is typically configured to couple each of the common output shaft and input shafts using a further shift gear pair. When a powertrain is disposed in a vehicle, the output shaft may eventually act on the drive wheels of the vehicle. One of the clutches 130 or 135 is usually engaged and the other clutches 130 and 135 are open to select one gear stage. Preferably, the dual transmission includes a plurality of shift gear pairs on each transmission shaft, and each of these shift gear pairs realizes one gear stage. The shift gear pair is generally fastened or unfastened when the clutch 130, 135 assigned to it is connected to the output shaft 120, 125 which is immediately open.

The clutch device 100 is particularly adapted for use in a powertrain of an automobile. In this case, the vehicle may preferably be driven in a hybrid manner, i.e. selectively driven through a combustion engine, through an electric machine 145, or through both of these drive engines. If the combustion engine is used, the third clutch 140 is engaged. If an electric machine 145 is used, the electric machine is typically electrically controlled so that torque can be delivered. Both drive engines can introduce negative torque as well as positive torque into the powertrain. In addition, the electric machine 145 can absorb kinetic energy in the power train and convert it into electric energy, which can be temporarily stored, for example, in an energy storage device. The clutch device 100 of the present invention is particularly suitable for front wheel transaxle mounting in automobiles due to its compact structure.

The first clutch 130 is assigned to the first operating device 160 while the second clutch 135 is assigned to the second operating device 165 and the third clutch 140 is assigned to the third operating device 170, . Preferably, a total of three actuators 160, 165 and 170 are hydraulically operated and configured to apply an axial actuating force to one of the clutches 130, 135 and 140, respectively, Or 140 are compressed together axially to create a friction coupling and to transmit torque between the friction members. Preferably, the friction members are pressed between the assigned actuating devices 160, 165, 170 and the axial thrust bearings, respectively. Preferably, the hydraulic actuating devices 160,165 and 170 are adapted to move the hydraulic actuating device 160, 165, or 170 of the respective actuating device 160,165 or 170, for example, as desired, Or can be actively controlled by being discharged from the hydraulic operation chamber. Alternatively, centrifugal-oil controlled actuation, for example, may also be provided.

The three clutches 130, 135 and 140 are preferably disposed at least partially within a common housing 175 that may be filled with liquid medium 180, particularly oil. The medium 180 may also be used as a working medium (hydraulic fluid) of one of the operating devices 160, 165 and 170. Clutches 130, 135 and 140 are preferably each wet-actuated, and may be configured independently of one another as single plate clutches or multiple plate clutches. More preferably, the first clutch 130 and the second clutch 135 are of the multi-plate type in order to allow delicate opening and closing of the torque flow through these clutches 130 and 135. The third clutch 140 may be a single-plate type as shown in the figure. In this case, the third clutch 140 may be configured as a shifting clutch that is not operated as much as possible in the slip state.

In the illustrated embodiment, a radial flange 185 is positioned as a thrust bearing between the first clutch 130 and the second clutch 135 in the axial direction, and the clutches 130, 135 May be squeezed by the assigned actuators 160,165. The operating force of the actuating devices 160, 165, 170 is preferably supported inside the clutch device 100, so that the resulting force is not supported outwardly.

If the clutch device 100 is used in a power train that does not include the electric machine 145, the third clutch 140 may be omitted. In this case, the first input side 110 and the second input side 115 coincide with each other.

Although in the illustrated embodiment the three clutches 130, 135, and 140, in other embodiments, for example, the radial arrangement of the first clutch 130 and the second clutch 135 may be selected, . In the illustrated axial configuration, the radial flange 185 is preferably located between the clutches 130 and 135 in the axial direction.

In accordance with the suggestions herein, the flange 185 includes a supply 190 that extends radially, particularly for the hydraulic fluid 180, which may correspond to the medium 180. In the illustrated embodiment, the feeder 190 extends completely through the flange 185 in the radial direction. On the radially outer surface, the supply portion 190 is closed by the rotor 150 of the electrical machine 145, which can also be performed by the first input side 110 in another embodiment. On the radially inner surface, the supply portion 190 is opened in the region where the radial bore in the first output side 120 leads into the coaxial bore 195 of the first output side 120. In this case, the first output side 120 is preferably implemented as a hollow shaft, and the bore 195 preferably extends concentrically with respect to the axis of rotation 105.

A first actuating device 160 is disposed in the radially central region of the flange 185 and includes a hydraulic actuating chamber 205 which is fluidly connected to the supply 190 by, for example, . To summarize, in the illustrated embodiment, the actuating device 160 can be activated by the introduction of the pressurized fluid 190 axially into the first output side 120. The restoration of the first actuating device 160 is preferably carried out by an elastic member 210 which may be formed as a diaphragm spring.

In the illustrated embodiment, the hydraulic piston of the first actuating device 160 extends radially inwardly into the region of the first output side 120. In order to prevent the fluid 180 pushed radially outward under the influence of the number of rotations from unintentionally opening the first actuating device 160, Thereby allowing centrifugal oil compensation to be provided by having the water 180 affected by the water be directed onto the outer surface of the piston.

The second actuating device 165 can be supplied with the hydraulic fluid in the same manner as shown in Fig. The second actuating device 165 is configured in reflective symmetry with the first actuating device 160 and the supply lines leading to the second actuating device 165 are preferably likewise likewise provided with the supply lines of the first actuating device 160 And extend symmetrically. The flange 185 preferably includes an additional feeder 190 extending away from the feeder 190 for the first actuating device 160. At the radially inner end, the openings of the two feeds 190 are preferably offset axially. If the fluid 180 passes through the shaft, particularly the first output side 120, to the feeds 190, the shaft has preferably separate bores for this purpose. One of the feed portions may terminate in an annular gap extending axially between the two concentric shafts, in particular between the output sides 120 and 125.

The third actuating device 170 is disposed integrally within a portion of the housing 175, in the illustrated embodiment. In this case, the hydraulic pressure supply portion does not normally extend through the region of the flange 185. Here, the operating force acting on the third clutch 140 is transmitted by the operating member 215, and the rotational motion between the third operating device 170 and the third clutch 140 is transmitted by the rolling bearing 220 Is released.

Fig. 2 shows another embodiment of the clutch device 100 of Fig. The embodiment shown here is primarily distinguished from the embodiment of FIG. 1 in that the third actuating device 170 is disposed in the region of the flange 185. Preferably, the three actuating devices 160,165, and 170 are provided on the flange 185 by defining the hydraulic actuating chambers 205 and providing the axial depressions closed by the assigned hydraulic pistons, Lt; RTI ID = 0.0 > 185 < / RTI > Here, the actuating member 215 for the third clutch 140 extends axially on the radially outer surface of the first clutch 130.

In the illustrated embodiment, the supply portion 190 is closed by a closed body 222 embodied as a ball here on the radially outer surface. The securing of the closing body 222 is preferably performed by a rotor 150 located radially outwardly of the electric machine 145.

The feed portions 190 leading to the first and second actuating devices 160 and 165 extend outwardly instead of radially inwardly in the flange 185 and are arranged in the flange 185, Only one of these lines is shown in Fig. In this case, the lines 225 extend axially, for example, radially outward of the second clutch 135.

3, another embodiment of the clutch device 100 of FIG. 1 is shown. Unlike the embodiment shown in FIG. 2, here, the supply portion passing through the flange 185 on the radially outer surface of the second clutch 135 is realized by the line 225. Alternatively, the supply portions 190 for the actuating devices 160 and 165 may be guided radially inward (see FIG. 1) or radially outwardly (see FIG. 2 Reference).

Further, Fig. 4 shows another embodiment of the clutch device 100 of Fig. The illustrated embodiment differs from the embodiment shown in FIG. 2 in the guidance of the feeds 190 primarily for the actuating devices 160 and 165. Both feed portions 190 first extend radially outwardly in the flange 185 and extend axially to the right at the outside of the second clutch 135 in the radial direction. Where feeds 190 are transferred to discrete lines 225 which are preferably radially inwardly offset and offset at the periphery around the axis of rotation 105.

The lines 225 are preferably terminated in a disengagement device 230 which ensures a hydraulic connection to the lines 225 regardless of the rotation of the lines 225 about the axis of rotation 105. [ Substantially the disengagement device 230 includes a radially outer member 235 having a radial passage 240 leading into the line 225 and an annular groove 250 And a radially inner member 245 having a radially inner surface 242a. The device is similar to the guide of the hydraulic fluid 180 between the flange 185 and the first output side 120 in the embodiment of FIG.

Fig. 5 shows another embodiment of the clutch device 100 of Fig. This embodiment substantially corresponds to the embodiment shown in Fig.

The features of the embodiments of Figs. 1-5 described above can be combined with each other, arbitrarily and arbitrarily, as can be readily appreciated by those skilled in the art for clutch devices.

100: clutch device
105:
110: first input side
115: second input side
120: first output side
125: second output side
130: First clutch
135: Second clutch
140: Third clutch
145: Electrical machinery
150: Rotor
155:
160: First operating device
165: Second operating device
170: Third operating device
175: Housing
180: liquid medium
185: Flange
190:
195: Bohr
205: Hydraulic working medium
210: elastic member
215: operating member
220: Rolling bearings
222: closed body
225: line
230: Disengagement device
235: outer member
240: passage
245: Inner member
250: Annular groove

Claims (10)

CLAIMS 1. A clutch device (100) comprising:
Under the condition that the input sides 110 and 115 and the output sides 120 and 125 can rotate about the common rotation axis 105,
- a first input side (110) and a second input side (115);
- a first output side (120) and a second output side (125);
A first clutch (130) between the first input side (110) and the first output side (120);
A second clutch 135 between the first input side 110 and the second output side 125;
A third clutch (140) between the first input side (110) and the second input side (115);
- a first hydraulic actuating device (160) assigned to the first clutch (130); A second hydraulic actuating device (165) allocated to the second clutch (135); And a third hydraulic actuating device (170) assigned to the third clutch (140); And
- a radial flange (180) which absorbs the axial operating force of one of the actuating devices (160, 165, 170)
- the flange (185) comprises a supply portion (190) for the hydraulic fluid (180) extending radially and leading to one of the actuating devices (160, 165, 170). The clutch device (100) according to claim 1, wherein the first clutch (130) and the second clutch (135) are offset from each other in the axial direction. 3. A hydraulic system according to claim 1 or 2, wherein the flange (185) comprises radially extending radially extending feed portions for hydraulic fluid (180) leading to a first actuating device (160) and a second actuating device 190). ≪ / RTI > 4. A clutch device (100) according to any one of claims 1 to 3, wherein the supply portion extends radially outward from the actuators (160, 165, 170). 5. A clutch device (100) according to any one of claims 1 to 4, wherein the supply portion extends radially inward from the actuating device (160, 165, 170). 6. A clutch device (100) according to claim 5, wherein one of the output sides (120, 125) comprises a shaft with a coaxial bore (195) and a feeder (190) leads into said bore (195). 7. A device according to claim 5 or 6, wherein the supply part (190) is closed by a closing body (220) on a radially outer surface, the closing body is radially adjacent to the electric machine (150) Is mounted radially outwardly of the first input side (110). 8. A clutch device according to any one of claims 1 to 7, wherein a total of three clutches (130,135, 140) are arranged in a common housing (175) partially filled with a liquid medium (180) ). 9. A clutch device (100) according to any one of claims 1 to 8, wherein the first input side (110) is configured to couple with a rotor (150) of an electric machine (145). 10. A clutch device (100) according to any one of claims 1 to 9, wherein the second input side (115) is configured to be connected to the output shaft of the internal combustion engine.

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